Transmission control device



March 19, 1940. J,y v QDHNER 2,194,231

Tl'ANSMISSION CONTROL DEVICE Filed Nov. 20, 1937 2 Sheets-Sheet l "To czarcH f March 19, 1940. v ODHNER 2,194,231

TRANSMIS SION CONTROL DEVICE Filed Nov. 20, 1937 2 Sheets-Sheet 2 T0 CLUTCH Patented 4 l Y i 2,194,231-

UNTEU STA'ES PATENT n ,2,194,231 i l n TnANsMissroN CONTROL DEVICE Jakob valentin oaimer, stbc'khplm, sweden Application. November 20, 1 937, Serial No.'175,706

' In Sweden November 21,k 1936 9 claims; (ol. 19e- 3.5)

Thepresent invention relates to a device in Further, the plate 3 vis provided with two upgear boxes, particularly for yautomobiles and Wardly bent flanges 8, in which grooves i8 are similar vehicles, of the kind provided with one or provided, into which a plate 9 extends with its more gear wheel actuators sbiftable to several two end portions. The lastmentioned plate `5 dierent positions. (positions of gearing) by serves for carrying the pad l@ of the pedal and 5 means o'f a pedal device. By means of the presis, on its underside, provided with afpin ll, ent invention, in addition to the advantage of .which passes through a somewhatvlengthened rmaking it possible to shift the speeds or gears slotl2, provided in the plate 3,*and into recesses by means of ones foot., it is possible to eliminate |5a, l5b, Ic and 15d, which Serve aS guides and `l several other. drawbacks connected with the vwhichvare provided in the edge portions of the 10 heretofore known constructions and described in plates 4, .5, which portions are.A turned against the following without, therefore, having to each other. The pad it of thepedal, which is change, in the least way, the ordinarg/simple swingable on pins'ld, is on its underside at its construction of the gear box. i one end provided with a projection v9|.; Further, i

l The device according to the invention is charthe frame l is provided with a flat top portion f 15 acterised substantially thereby that the pad of 20, inwhchthere are a number ofholes lli, Hic, the pedal, which is adapted, while performing a Mib, |50 and iSd. 2l indicatesv a bar, which is swinging movement, to engage and. disengage reunited withv the clutch and at itstop is provided spectivelyy the clutch between motor and gear with a -swingable roll andr which bar, when the box, is swingably carried by a membenwhich is clutch is engaged, assumes the position shown in 20 movable in `at least 'two different directions of Figure 2 of the drawings, but which bar, by the movement, by'means of which member the gear swinging ofthe pad ID in the arrow direction inwheely actuatorsare adapted to be lmoved byU'the dicated in the said igure,l against spring action said member from one position of gearing f to vmay be pressed down so far thattheprojection ,25 another only by the foot being moved in various 9i is able toleave its engagement with thatv hole 25 directions in one and the same plane. of the lholes Iii-iSd, which thejprojection has Two embodiments of. the invention are illus entered, by which the clutch is disengaged.` trated on the accompanying drawings, in which The device operates as follows;` When the padl Figures 1 3 showr one embodiment. I0 of .the pedal `assumes its position shown in Figure l shows the device in section on' the the drawings the clutch is engaged but all Agear 30 line 1,-1I in Figure 2. wheelsin` .the gear box are intheirneutral posivFigure 2 shows the device in sectionl onfthe tions. Ihus also the pad assumes neutral po liney II-II in- Figures 1 and 3 `respectively and sition, it being presumed that the gear box, to

Figure 3 showsthe device in plan view. which the device is applied, is provided `with Figures 4-6 show the device according to the three speeds or gears for forward run and one 35 other embodiment, gear for backward run. Ii lthe gear isr now to .f

Figur@ LLsloowing `thef device in'plan view, and be. shifted to the rst speed the 'padis swung in Figure 5 showing it in side view, Y the arrow direction indicatedinl'igure 2 byk op- Fgu 6 ShOWS 2l SSCOH 0TH tielnc VI-.VI in erator depressing his toe portion of the foot by 40 Figure 3. v which `the pin or the projection QI is disengaged 40 On the 'drawings' l indicates a rectangular from the recess I6. Simultaneously therewith frame, which by means 0f Suitable members may also the clutch is disengaged. It is now the be attached to thegear box. In the said frame question of imparting to the plate a rather (according tol'figures 1-3)- there lare provided, short movement of displacement, the pad and in two ,opposite sides, relatively lengthened the. plate t. respectively being rst moved back- 45 openings' or grooves 2 serving as guides, a plate wards as far as is admitted bythe groove i2 in 3 being movably mounted .in the said'grooves. the plate 3. After that the padii together with In each ofthe. two ,other opposite sides of. the the plate Sis moved in such direction sideways frame there is also provided a relatively lengththat the pin li is caused toenter the groove ld.

cned recess il, in which two plates'4, 5 are On account of the fact that the pin ll, how- 50 guided, which plates are .located adjacent to ever, together with the plate 3, is now able to each other and are movable relativelyone anperform a movement of displacementvv only in the other. To the lastmentioned. plates there are longitudinal. direction of the lastmentioned secured the gear wheel actuators 6, l, which plate, the plate 4, on account of the oblique di-` serve for the displacement of the gear wheels. rection of the groove ld, will receivea move- -55 ment of displacement directed perpendicularly to the direction of movement of the plate 3. When, finally, the pin ll has reached the end of the groove id, by which the actuator 6 has shifted the respective gear wheel, the pin 3| is located right above the hole IGd. By now giving the pad the possibility of slowly returning to its initial swung position a smooth engaging of the clutch is effected and the gear has now been shifted to the rst speed. When shifting to the other speeds the same procedure as the one above described is followed.

From the above description it is seen that it is impossible to engage a gear during the moving of the gear wheels, beca-use the projection ill then rests against the upper surface of the upper member 2t. Such securing against too early engaging of the clutch in the heretofore known devices does not exist. Moreover, in the heretofore used devices it happens that the gear wheel actuator', particularly when driving the Vehicle on an uneven road surface, by vibrations or by unintentional actuation, is caused to leave its assumed position of gearing in spite of the fact that the clutch is engaged. In the device according to the invention this cannot happen, because the pad by the cooperation of the pro- .iection 9i with the holes lG-Id is prevented from leaving its position of engagement as long as the clutch is engaged. Further, as has heretofore been necessary, it need not be considered that in prior devices the clutch pedal is depressed long enough before it is possible to shift the speeds because, as already mentioned above. a lateral movement of the pad l cannot take place until the projection Si has been liberated by the swinging of the pad.

The embodiment according to Figures 4-6 differs from the hereinbefore described embodiment substantially therein that the part carrying the pad lil of the pedal consists of a swingable arm 3d, the pivot 22 of which extends vinto a groove 23 provided in the frame l, which is in the form of a plate. The said groove extends in a direction perpendicular to the direction 0f motion of the gear wheel actuators B, T. As will be seen from the drawings, the gear wheel actuators are in this case movably mounted on shafts 2li, fastened into the frame plate I. A second pin 28, which is secured to the arm 30, by the swinging and moving respectively of the arm, is adapted to cooperate with the gear wheel actuators 6, l in such a manner that the latter, by the pad being moved in various directions in one and the same plane, are, in a previously described manner, movable from one position of engagement to another. The pin Sl in the embodiment according to Figures 1-3 in the present embodiment replaced by a cotter 26 or the like, which is guided in a slotted sleeve 2l formed from the arm 3l! and which, by means of an extension ES extending from the pad l0 has jointed connection with the pad. Also in this embodiment the pad is blocked during the moving from one position of engagement to another. Only when the pad assumes its swung position shown on. the drawings, in which it holds the clutch in disengaged position, i. e. when the cotter 2@ is held out of engagement with the holes i9, lilo, leb, Hic and iSd provided in the frame plate l, may the arm 30 and the pin 28 respectively be brought to cooperate with and displace respectively the gear wheel actuators. In the above described embodiment the pins 22 and 28 may change places without inconvenience and also the pin 22 may be mounted stationarily in the plate l, in which case the groove 23 is provided in the arm 3D. Also other modifications than the ones above described and indicated may be devised within the scope oi the invention.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A transmission control device comprising a clutch control pedal, means mounting said pedal for clutch engaging and disengaging movement, a gear wheel actuator shiftable to different positions, said mounting means being movable in at least two directions in a plane other than that in which the pedal is movable in actuating the clutch, and means for coupling the mounting means with the actuator for transmitting the movement oi said mounting means to said actuator.

2. A transmission control device as claimed in claim 1 characterized by the provision of means operable during the shifting ci the gear wheel actuator under the control of `the mounting means to lock the pedal in clutch disengaging position,

3. A transmission control device as claimed in claim i characterized by the provision of means controlled by the clutch pedal when the latter is in clutch engaging position, to lock the mounting means and the actuator in adjusted position.

4. A clutch control device as claimed in claim 1, characterized in that said m mting means is movable rectilinearly in two directions to effect shifting movement of the gear wheel actuator.

5. A transmission control device as claimed in claim 1 characterized in that said mounting means is pvoted about a movable axis.

6. A transmission control device comprising a clutch control pedal, means mounting said Pedal for clutch engaging and disengaging movement, independently movable members, gear Wheel actuators carried by said members, said mounting means being movable in a direction perpendicular to the direction of movement of said members, and means carried by the mounting means and movable therewith to er1- gage and displace the respective members to shift said actuators.

7. A transmission control device comprising a clutch control pedal, means mounting said pedal for clutch engaging and disengaging movement, means supporting said mounting means for combined axial and swinging movement, gear wheel actuators shiftable to different positions, and means on said mounting member engageable with said actuators for shitting the latter incident to the axial and swinging movement of said mounting means.

8. A transmission control device as claimed in claim 6, characterized by the provision of means to lock said pedal in clutch disengaging position while the gear wheel actuators are in the process ot' being shifted out oi one gear and into another.

9. A transmission control device as claimed in claim 7, characterized by the provision oi means to lock said pedal in clutch disengaging position while the gear wheel actuators are in the process of being shifted out of one gear and into another.

JAKOB VALENTIN ODHNER. 

